Questions about RGB; short for red, green, blue. It's the colour process and model used in colour visualisation on digital devices. Ask anything relevant to graphic design about the RGB colour model.

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35
votes
10answers
23k views

What is the difference between CMYK and RGB? Are there other color spaces I should know?

I'm a photographer, who dabbles in graphic design from time to time as well. What are the differences between the various color spaces?
19
votes
8answers
8k views

RGB and CMYK: Why both?

Any of you who have at least little experience with graphic design software, photography or professional printing, must have -almost undoubtedly- have gone through this: 'the struggle' of RGB and CMYK ...
19
votes
1answer
574 views

How to get standard results in colour management in Linux

I have recently calibrated and profiled my screen, with a ColorHug device. I'm using Gnome, and have the profile installed through gcm. When opening an image in GIMP and DigiKam, the results are ...
18
votes
4answers
8k views

What's the difference between CMYK Black and RGB Black

I know this sounds a stupid question, black is black right? Wrong: It's black right? so why are the CMYK Values so far away from black?
13
votes
7answers
9k views

How to convert RGB colors into real paint colors?

How can I convert an RGB color into a real life color? If I mix equal amounts of red, green and blue paint together in real life, I will never achieve a white color, in the way you do when setting ...
13
votes
5answers
12k views

What's the point of converting RGB images to CMYK TIF/TIFF before placing them in InDesign?

Currently we receive CMYK TIF/TIFF images of photographs from our design agency (who get them from the photographer). Our in-house designers then place them in InDesign for posters and magazines, or ...
9
votes
2answers
8k views

What's the difference between Monitor RGB and sRGB?

Since the output is web, RGB is choosen, but is there any difference between "Monitor RGB..." and "sRGB..."? In Photoshop, they are both under color settings > working spaces > RGB
8
votes
3answers
16k views

How does a monitor display the CMYK color? Is it actually showing the true CMYK color?

Suppose I'm designing something for printing purposes. Then I need to stick with CMYK model. When ever I'm choosing color while designing, I'm setting color based on what my monitor shows me as CMYK. ...
8
votes
2answers
764 views

Does hue/sat/lum offer a smaller range of colors than RGB?

All values of RGB should be unique and distinguishable, meaning there are truly 256*256*256 colors. In HSL, however, if L=0 then H and S can be anything, but you still get the same color (black). ...
8
votes
1answer
6k views

What is HSB really?

Can any of my graphics designer friends explain HSB to me? I know it's hue/saturation/brightness and I know what those three do (for the most part)... I understand the algorithm of creating colors ...
8
votes
1answer
5k views

If I make a design in RGB mode and then change it to CMYK how will it look when it's printed?

I'm making a business card in Photoshop and it needs to be in CMYK mode. Now, I'm using a logo on it that I previously made for the client in RGB mode and when I put it into the CMYK mode business ...
8
votes
1answer
445 views

Creating a color scheme that looks good on screen and when photocopied in black and white

I'm trying to create a color scheme for text headlines that will have distinctly different colors for each level of header, but will also print out mostly dark. I looked at http://colorbrewer2.org/ , ...
7
votes
2answers
388 views

RGB Vs CMYK : Deciphering gradient transitions in different colour modes

This issue may be related to Photoshop or to colour modes in general but this is what I am trying to figure out. The image below is from a CMYK file with two layers. It has two duo colour gradients. ...
7
votes
1answer
734 views

if you accidently make a document in working CMYK how can you change it to RGB?

if you accidently make a document in proof setup 'working CMYK' is there any easy way to convert the document to RGB without the colours getting washed out?
6
votes
3answers
2k views

Completely different interpretation of Pantone to RGB values depending where I look.

I'm making a web site and have been told the corporate color is pantone 2745. In illustrator, here, and here it is a deep indigo color. Here, here, here and here it is a deep violet sort of color. ...
5
votes
4answers
826 views

Simplest set of inks that could print the RGB gamut?

Artist Tauba Auberbach produced this recently: It's called RGB Colourspace Atlas, and is a physical, printed book of what it implies is the whole RGB colour space. Is there an existing ...
5
votes
3answers
73k views

how to change the workspace color window from RGB to CMYK mode in Illustrator CS5.1?

I'm using Illustrator CS5.1 and started a new document in RGB mode. When I change the color mode to CMYK under File > Document Color Mode > CMYK Color, the Color window in my workspace doesn't ...
4
votes
3answers
8k views

PANTONE and color conversions

I have been given a standard color palette. The colors are defined in terms of PANTONE #### X for example PANTONE 1234 C. Followed by their CMYK, RGB and HSB values. Another page defines ...
4
votes
3answers
615 views

A selection of colors that spans the range of the RGB color spectrum?

Below is a screenshot of a small application I am building. I would like to cover the most significant colors from whole color spectrum, but I am missing lots of colors. I don't get the intended ...
4
votes
2answers
171 views

Faded Colour Code Calculation

I know multiple programs that calculate colours based on a percentage. I really love when colours are displayed this way as they seem to fade in a non-luminous dull way that is really indicative of a ...
4
votes
3answers
14k views

Is there a freely available CMYK color chart that I can print on press and work with?

After reading the answers to my previous questions, How does a monitor display the CMYK color? Is it actually showing the true CMYK color? I'm very much convinced that I need to profile my monitor if ...
4
votes
2answers
1k views

Colouring illustrations - RGB or CMYK?

I am in the process of colouring a series of hand-drawn illustrations in Photoshop using a graphics tablet. The colouring process takes place mostly using Photoshop's native drawing tools - the ...
4
votes
2answers
2k views

RGB to CMYK conversion problem

I'm having a rather annoying problem! I have RGB images made in Photoshop that I need to convert to CMYK. When I save the file my black background is converted to a light grey! I tried deleting my ...
3
votes
11answers
12k views

How can I find out what RGB colors a website uses?

I want to learn the CMYK/RGB or any other details of a colour on a website. Say the side/background of this very website. I want to recreate that colour. Can anyone help me? Or is there any specific ...
3
votes
2answers
2k views

Antonym of Pastel Color Space (Color Scheme?)

In color spaces we have the regular solid colors like solid red (#FF0000), solid green, solid blue, etc. ... Then when we add about 50% white ontop of it, it becomes a "pastel" color space... What ...
3
votes
1answer
570 views

“Black text has been set up so it prints as 4 colours, rather than just black” - what?

I'm currently dealing with a printer, who I've been working with for a year or two. We've sent off to had one of our brochures reprinted - the same files as last time, except now they're having some ...
3
votes
3answers
490 views

Getting an Accurate Colour Match in RGB

I'm designing a website at the moment. The client's corporate colour is PANTONE Black 2C (made up of 70% Black and 30% Yellow). Now, when printed it comes out very dark but with a hint of yellow. ...
3
votes
2answers
111 views

Created a poster to print in CMYK, but when client downloads JPG, on the screen it is neon. Will it print how it looks when I created it in CMYK?

I created a poster in Photoshop and it in CMYK mode because it is going to be printed (not used on the web at all). I saved it as a JPG (also in CMYK) and when I sent it to someone in an email and ...
3
votes
2answers
394 views

Which RGB profile should I use for my JPG file?

I need to send a image as the title says. But the amount of RGB choices confuse me... There's sRGB built-in, sRGB, adobe RGB, apple RGB... I thought of choosing "Best RGB", is it okay...?
3
votes
1answer
524 views

How to get RYB complementary colors in RGB imaging software

I am looking for a way to get RYB complementary colors in software. This means, complementary color pairs I am looking to get would be: red - green yellow - violet blue - orange However, when ...
3
votes
1answer
4k views

Is it better to design in 16 bit mode in photoshop?

What is the ideal color mode to design in photoshop cross platform/ multi device product design? Default seems to be 8 bit mode, however 16 bit mode seems to hold more color information. What are the ...
2
votes
4answers
10k views

Pantone color conversions

I am a bit of a newbie with using pantones and the pantone color guide. I am currently working on a branding project where we will have print material in both pantone and cmyk, and also on screen rgb ...
2
votes
2answers
5k views

Translation of Hex Colours to RGB Colours?

Apparently Illustrator and Photoshop uses different colour settings - Illustrator uses RGB and Photoshop uses some hex/HTML-like colour system with a combination of letters and numbers. Is there any ...
2
votes
1answer
3k views

Converting bar code to CMYK “True Black”

I have .tiff. Part of the .tiff is a bar code. My printer is insisting the bar code be converted to 100%K - CMYK "pure black". (Their words) A couple obstacles: 1) The Bar Code has been scaled up. ...
2
votes
1answer
255 views

Illustrator and CMYK or RGB mode when using Pantone colors?

Should Illustrator be set to CMYK or RGB mode when using Pantone colors? Thanks in advance!
2
votes
2answers
614 views

Why are my colours outputting so differently in Illustrator

Despite trying various colour profiles across Illustrator and CS5 I seem to keep running into save for web, export and screen-grabs (used as a more accurate last resort) issues where the colours I'm ...
2
votes
1answer
401 views

Global color settings for illustrator / keeps switching to gray

Is there a setting in illustrator that will make all of my colors, in all new projects, RGB? I'm not really sure why it often ends up as grayscale. I only use RGB for web assets and having to change ...
2
votes
3answers
2k views

How to use photoshop file in Indesign for print (having Pantone colors)

I have a question for you guys... :) I have Pantone Colors in my photoshop files. However, I am also using Indesign to do final composing and exporting of the design. I was wondering what is the ...
2
votes
1answer
3k views

Adobe InDesign: how can I get the CMYK code from a color that I have saved in RGB in the swatches?

I'm making a work for school and I have to put together color palettes for some pictures. I also want to indicate the RGB and the CMYK code but when I get a color from a picture with the Eyedropper ...
2
votes
3answers
218 views

How to present a print project to a client?

I'm a self-taught designer and now I'm working on a packaging project. I'm designing in Adobe Illustrator CC using CMYK color mode, but now, I want to present my client the work with a mockup and I ...
2
votes
1answer
308 views

Exporting in CMYK in Affinity Designer?

I use Affinity Designer, and I found that although I create the design in CMYK colour model, when I export it as a .jpg or a .png file, the design reverts back to RGB colour model? Is there any way ...
2
votes
1answer
160 views

Choosing appropriate text color with given background

I have an image with green background, lets say #5F7642. I need to add small text in red color over that background. The problem is, usual red colors pretty much fade in with the background. I need ...
2
votes
3answers
433 views

RGB to CMYK conversion — more than one way?

Occasionally a science journal asks authors to submit figures as CMYK (JPG or TIFF) for publication. When I have done this in the past, the colors in the figures end up looking very muted and washed ...
2
votes
1answer
989 views

Colour of gradient overlay changes when saving for web and devices in Photoshop CS4

I have an image with a linear gradient overlay (banner image on this page EDF Energy - Our Campaigns. I have set the RGB colour in CS4 to R: 29 G: 31 B: 79. However, when I save the file for web the ...
2
votes
0answers
141 views

What is happening to my colorbar when I open Illustrator?

I usually create figures using something like Matlab or Python; then I use Illustrator for final touch-ups and things. Unfortunately, I'm having trouble with the colorbars when I open my figures in ...
2
votes
0answers
29 views

How to make a black and white image print in CMYK as it appears in RGB on screen [duplicate]

In Illustrator (CS6/CC) I have an image that is black and white and looks really rich and deep in RGB on screen but after printing appears really gray and loses its depth. Messing about with settings ...
1
vote
2answers
155 views

Is there a printing press that can print a book directly from the RGB space?

I have a book ready for printing. But, of course, it was done in RGB. In fact, I stretched the RGB gamut beyond its normal range in order to make it more painterly etc. When I saw it converted to ...
1
vote
1answer
79 views

Proof printing for the web

I had this debate with a colleague and we didn't see anything solid or something from a search that would answer this with certainty so I thought I would open it here. You are designing a website or ...
1
vote
2answers
18k views

Problem converting color from RGB to CMYK for print

I designed a poster in CorelDraw X5 for printing purposes. I was told by the Printshop guy to use colors only in CMYK. For the most part I did, I don't know why I missed it but I used one color in RGB ...
1
vote
1answer
898 views

from RGB to CMYK in InDesign

I read... " InDesign recognizes the color profiles of all placed images (sRGB, Adobe RGB, ProPhoto RGB, etc.). When you export to PDF (never PNG or JPG if you're going to press -- never, ever), ...